28135415320 has 32 divisors (see below), whose sum is σ = 63318568320. Its totient is φ = 11251697920.

The previous prime is 28135415309. The next prime is 28135415339. The reversal of 28135415320 is 2351453182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113340 + ... + 262900.

It is an arithmetic number, because the mean of its divisors is an integer number (1978705260).

Almost surely, 2^28135415320 is an apocalyptic number.

28135415320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28135415320 is an abundant number, since it is smaller than the sum of its proper divisors (35183153000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28135415320 is a wasteful number, since it uses less digits than its factorization.

28135415320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154275 (or 154271 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 28135415320 in words is "twenty-eight billion, one hundred thirty-five million, four hundred fifteen thousand, three hundred twenty".